﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;

namespace Liukun.SmartParking.Client.Base
{
    public class PasswordHelper
    {
        // Using a DependencyProperty as the backing store for Password.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty PasswordProperty =
            DependencyProperty.RegisterAttached("Password", typeof(string), typeof(PasswordHelper), new PropertyMetadata("", OnPropertyChanged));

        public static string GetPassword(DependencyObject d)
        {
            return (string)d.GetValue(PasswordProperty);
        }

        public static void SetPassword(DependencyObject d, string value)
        {
            d.SetValue(PasswordProperty, value);
        }

        //这个是为了密码通过附加属性 赋值到控件的输入框上
        private static void OnPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            PasswordBox pb = (d as PasswordBox);
            pb.PasswordChanged -= Pb_PasswordChanged;
            if (!_isUpdating)
                pb.Password = e.NewValue.ToString();
            pb.PasswordChanged += Pb_PasswordChanged;
        }

        public static readonly DependencyProperty AttachProperty =
            DependencyProperty.RegisterAttached("Attach", typeof(string), typeof(PasswordHelper), new PropertyMetadata("", OnAttachChanged));

        public static string GetAttach(DependencyObject d)
        {
            return (string)d.GetValue(AttachProperty);
        }

        public static void SetAttach(DependencyObject d, string value)
        {
            d.SetValue(AttachProperty, value);
        }


        static bool _isUpdating = false;
        private static void OnAttachChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            var passwordBox = d as PasswordBox;
            passwordBox.PasswordChanged += Pb_PasswordChanged;
        }

        private static void Pb_PasswordChanged(object sender, RoutedEventArgs e)
        {
            PasswordBox pb = (sender as PasswordBox);
            _isUpdating = true;
            SetPassword(pb, pb.Password);
            _isUpdating = false;
        }
    }
}
